For those readers who come as neophytes to the thought of Thomas, the following invitation to further explorations should serve as a beginner’s guide to his philosophy and theology, a beginner’s guide that gradually progresses to some more substantive and demanding interpretations of Thomas that are most helpful. For those readers already more advanced in their encounter with Thomas’s teaching and for those who would call themselves Thomists, the more demanding among the following list of studies simply indicate among a much larger body of Aquinas scholarship those works to which I am most gratefully indebted.

For a balanced and lucid overview of and solid introduction to all topics treated in the Summa theologiae, the student of Thomas’s thought might first want to consult Brian Davies, O.P., The Thought of Thomas Aquinas (1992). However, the reader who is looking for guides to the most central treatises of Thomas’s masterpiece will find excellent guidance from the following studies, which are not listed alphabetically but along the lines of the order of teaching (ordo disciplinae) the Summa theologiae unfolds.

To assist the reader in grasping Aquinas' philosophy (without which his theology "cannot be adequately understood, let alone appreciated"), Hutter offers the following recommendations:

The most thorough historical-genetic treatment of Thomas’s philosophy is John F. Wippel, The Metaphysical Thought of Thomas Aquinas: From Finite Being to Uncreated Being (2000). The best account to see Thomas’ metaphysics concretely at work in a conceptual reconstruction of its main moves would be Lawrence Dewan, O.P., Form and Being (2006). Eleonore Stump, Aquinas (2003), offers an excellent treatment of Thomas’s thought, primarily his philosophy, but also aspects of his theology, that is directed to a readership influenced by analytic philosophy and the natural sciences. Inspired by an Aristotelian-Thomist integration of natural philosophy and metaphysics, Benedict M. Ashley, O.P., in his opus magnum, The Way toward Wisdom: An Interdisciplinary and Intercultural Introduction to Metaphysics (2006), offers an impressive demonstration of how the pursuit of philosophical wisdom along the lines of Thomas — metaphysics as
meta-science — allows a comprehensive vision of all human sciences in a coherent and expansive framework. Jacques Maritain’s earlier and in many ways unsurpassed classic, Distinguish to Unite or The Degrees of Knowledge (1995), offers an even more expansive framework of Thomist epistemology: from the knowledge conveyed by the senses to natural philosophy and natural science, from there to metaphysical knowledge and theological knowledge, and finally to mystical knowledge. And in order to find out
why indeed Thomism as a coherent intellectual tradition of philosophical discourse and inquiry proves superior to modern and postmodern modes of such discourse and inquiry, one cannot do better than turn to think through the argument advanced in what has become a classic in a very brief time: Alasdair MacIntyre’s Gifford Lectures, Three Rival Versions of Moral Inquiry: Tradition, Encyclopaedia, Genealogy (1990). Another set of expanded Gifford Lectures offers a brilliant and spirited defense of
Thomas’s understanding of philosophical wisdom. No other recent work will help the interested reader better to understand why natural theology was absolutely indispensable to Thomas’s overall theological project than
Ralph McInerny, Praeambula Fidei: Thomism and the God of the Philosophers (2006). For a contemporary restatement of Thomas’s natural theology that addresses and rebuts the criticisms against natural theology raised by Kant and Heidegger, one best turns to the lucidly argued book by
Thomas Joseph White, O.P., Wisdom in the Face of Modernity: A Study in Thomistic Natural Theology (2009).

By the time the reader has reached this point of the introduction it might have dawned upon him or her that this kind of invitation to a deeper exploration of Thomas’s philosophical and theological thought might presuppose a more encompassing intellectual reorientation and reeducation. Such a reader is well advised to take advantage of two rather
unique books, one as precious as the other: A. G. Sertillanges, O.P., The Intellectual Life: Its Spirit, Conditions, Methods (1980), and Josef Pieper, Leisure — The Basis of Culture (1998).